What is RNP approach?
Definition. Required Navigation Performance (RNP) is a family of navigation specifications under Performance Based Navigation (PBN) which permit the operation of aircraft along a precise flight path with a high level of accuracy and the ability to determine aircraft position with both accuracy and integrity.
Does RNP 4 require GPS?
For RNP 4 operations, an aircraft must meet a cross-track keeping accuracy and along-track positioning accuracy of no greater than +7.4 km (4 NM) for 95 percent of the flight time. Different routes that require RNP-4 may have different separation, equipment, and communications requirements.
When to use a RNP approach in IFR?
RNP allows IFR procedures to be designed in environments, where previously no instrument approach could be envisaged. RNP approach- es are particularly suited for (but not limited to) approaches in challeng- ing areas (e.g. mountainous areas) and as a replacement for most exist- ing circling approaches.
How to get RNP AR approval from the FAA?
To get authorization for RNP AR, the aircraft needs to comply with the applicable functional and performance requirements, the crew needs to be trained and lot’s of documentation must be maintained. Basically proof must be provided that all of the three error terms are under strict control. In a sense it is somewhat similar to ILS CAT III approval.
Do you need a TF for RNP AR?
RNP AR routes only make use of TF and RF leg types to fully fix the lateral path. RF legs are not supported by all navigation systems by default. To get authorization for RNP AR, the aircraft needs to comply with the applicable functional and performance requirements, the crew needs to be trained and lot’s of documentation must be maintained.
Which is an example of a SAAAR / RNP AR instrument approach?
Aspen is an example of an airport that has one. First allow me to give a quick introduction to RNAV and RNP before geting to SAAAR / RNP AR.